RFR: 8296157: Rename FileMapInfo::space_at() to region_at() [v4]

[Ioi Lam]

On Thu, 3 Nov 2022 20:22:55 GMT, Matias Saavedra Silva <matsaave at openjdk.org> wrote:

>> Most of the CDS code refers to a memory blocks inside a CDS file as "regions", represented by the type FileMapRegion. The method FileRegion* space_at() has been renamed to region_at() and all instances of its use have been replaced. Verified with tier 1-4 tests.
>
> Matias Saavedra Silva has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Updated copyright

Marked as reviewed by iklam (Reviewer).

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PR: https://git.openjdk.org/jdk/pull/10937